The Mawan gold deposit is one of typical hydrothermal-filling-metasomatism-alteration-type deposits in gold deposit concentrating area in Jiaodong, Shandong Province. The mineralized belts, ore bodies (Ⅰ1 andⅠ2) and mineral characteristics of one new ore block are summarized in detail, as well as the types of alteration of its wall rock, based on the analysis of the geological background. Further prospecting direction is also pointed out.